Drill-steel-sharpening apparatus



June 2, A. H SKAER ET .AL

DRILL STEEL SHARP ENING APPARATUS Filed April 24, 1923 v5 Sheets-Sheet 1INVNTORS.

June 2, 1925. 7 A. H. SKAER ET AL DRILL STEEL SHARPENING APPARATUS FiledApril 24, 1923 5 Sheets-Sheet 2 IN V EN TORS BY u I ATTORNEY June 1925-1,540,191

' A. H. SKAER ET AL DRILL swam. srummmms APPARATUS Filed April 24, 19235 Sheets-Sheet V TO 4.715%? EN R 0.42;

ATTORNEY A. H. SKAER ET AL DRILL STEEL 'SHARPENING APPARATUS Filed April24; 192:5 s Sheets-Sheet 5 a. HSMT" QEC'ZdTtZ Patented June 2, 1925.

iIiQByATIQ @Q aim s [1 lm i atiqn i e we. 2% 52F 4 11%. $2

' To @Z'Z whom it may concern:

"Be it known thatf we, ;H. 581mm MICTOQ'KAIi GLAnLeiti'Zensef the UnitedStetes, residing. at Denverin the c on nty 0t Denver and State ofColorado, have in'jven'ted certain new and usefu l 'linproven ents inllrill-Eteel-Sharpeiiiiig Apparatus, of which fthe following isefspe'eifizition.

The Obj c b fih Pr en ve t i to p ov d -ev o pa t; si e hi y fi c v ma hn for t eb v P pose- "I h iacwi panying aw Figure 1 is asidefelevetipiiof the preferred embodiment ofthe invention;

'Tigure 2 is a; leer elevation pithe same, with one of the closureplzites renioved',

"FignreS awfront elevation With'the bsure P ate r m v d;

Eigni e '4; is a ertical longitndinal sec t p- 1 QW, v

lfignre; a detail vertical septipnal View thrqngh the elanriping; idieiinotor "a'r'ld the ciiil ie n alr Figures 6 and '7 are detail sections h'di the v me hen smil wi .vl l in diff t i e fi n Figure 18 is ik detaii sectional View of a portion'of the valve-chest the receivingfirinneTfor-the eiihziush i fln the structure disclosed, a hollow basemember is ,lempl oye'd, V jerefer bly I colnpifi s ing agbottom 9,iipright side Walls-I0; and z gr elative'ly hemi'y top {11hichepn'stitiites a plat i orn A'yertieal prans r eweb or reenforcingpartition 12 BXiQQI IdSZEl QfIl the botto nr 9tothe top 1 1, and-fromone side' w l t he e h aeid rper i f lim i e opening 13- 1 n' itsuppeijporton. As 5; conseq iencethe ease hesa shtmberofrelative- 1ygreat sizefiind" forms easing provided with oppositeb en si des.T1isel'-'s ic1esere zideptedi to be e osed hy plates 14 and 5 15,detachebly secured in place by screws -16 1 a e "me t l-ilg iii by he Sd Wells "One. end offlthe plattorm 11 is provided w th; an el yet d new1-8; e zs for a fixed eiambinglglie 19 that in ay be of I any desired,chgi'ra'eterniwpirnted toreiprowith the, cross head Q i off the 1unger;;rpds v 20. The 1 other". of said lever exten ds hese throughthbpening-lsin the pmiticsn -12 and 1 has 'pivo'tgi fiheretb Another?'pitmen 29. "#Thi pitman extends intoe'tqbuh fhfl loyv piston3!),"2'L'I1d is pivoted, shown at 31, m5 its innerforiower eiidi rhg"piston 30' is contained in avert-i993 cylihdeifihiri ber32 hoi1sedwithin thchafr' ber 6f the base m mber end dem hably mofint'ed there in.To end'-'tlielcylindeif ginc ludes 'a lower heaid 33," and the gj iinderor bar'reihzis 2m outetanding fl ngegg i lbcalf edwithgis a alve Chest-39, the ll'iijper 'pq tlon pipe 42 eonfiectechwith' any suitable Idollying hammer, the supply port 50'from said valve'chest 89,.beinglocated below the port 44, throughwhich'motive fluid is sup plied to thedie actuating motor. The lower end of the valve chest 39 is open, asshown at 51 and constitutes an exhaust port.

Mounted within the chamber of the base member in line with said exhaustport 51, but slightly spaced therefrom is the open mouth of a receivingfunnel 52, the neck 53 of which is coupled to a hose 54 arranged withinthe base member chamber, preferably extending through thelower end ofthe partition 12. This hose leads to a transvers manifold 55, twobranches 56 of which constitute, in effect, ports that open between theclamping dies 19 and 22, preferably on opposite sides of theirwork-engaging faces.

Located in the bore of the valve chest 39 is a reciprocatory plungervalve, comprising a lower controlling head 57 connected by a neck 58with an upper closure head 59, the heads 57 and 59 constituting, ineffect, the end walls or closures of the pressurechamber 40 of the valvechest. Pivotally connected to the upper end of this valve is a link 60connected to the crank arm 61 of a rock shaft 62 journaled in one of theside walls 10 of the base member. On the outer end of said rock shaft isfixed an actuating crank 63, the movement of which is limited by asuitable quadrant 64. f The weight of the valve and the movable partscoacting therewith is substantially counterbalanced, preferably by acoiled spring 65 secured to the link 60 and to hook 663' or other deviceon the partition 12. v c

The operation of the structure is as follows: Assuming air or otherexpans'ible fluid, under pressure, is supplied to the pipe 42, thisfluid will be in the chamber 40, and consequently'through the port 48will have free access to the chamber 88, thus acting on the uppersurface 37 of the piston 30,, and forc-.

ing it to its lowermost position. With the valve as shown in Figure 5,the ports44 and 50 are cut off from the chamber 40. If now the handlecrank 63 is moved to depress the valve, the controlling head 57 willmove downwardly until th port 44 is opened to the supply port 41 throughthe pressure chamber 40. Consequently motivefluid will flow into thecylinder member .below the piston, and overcoming the pressure againstthe surface 37, will elevate said piston. As

and therefore motive fluid will be turned into the dollying hammer sothat the work clamped will be operated on. A retrogradeorupward movementofthe valvewill first shut off the supply to the dollying hammer,thereby causing it to cease work and after wards the supply to the dieactuating motor through the passageway 45 will be cut off from thesupply. hen this occurs, theerhaust port 51 will be opened to thepassageway 45 and the pressure on the upper face 37 of the piston willcause the said piston to move downwardly, thereby elevating the upper ormovable holding die 22. As said die moves upwardly, the exhaust takingplace through the port 51 will be in great measure received by thetunnel 52, and passing through the hose 54 and manifold will escapebetween the dies, thereby cleaning the same from scale and otherdetritus. Inasmuch, however, as the conduit 54 will not immediatelyreceive and transmit the full amount of the expanding exhaust, aport'ion will escape into the main chamber of the base member, whichhaving a relatively great capacity will cause a slight increase aboveatmospheric pressure, and yet-not enough to create any material backpressure that will affect the proper opening action of haust -motivefluid from the chamber into the funnel 52 so that it will. escape, alsobe tween the holding dies and supplement the cleaning action.

-Obviously the structure is simple, and it has proven highly effectivefor the purposes disclosed. It is very compact,vthe operating mechanismfor the movable die being located wholly beneath the table-carrying thedies and dollying hammer. Moreover the movable parts are readilyaccessible, the plunger rods and lever being availableby the removal ofthe closure plate 15, and the die moving motor being likewise easilyaccessible by removing the face plate 14. This motor being an entityseparate from the base member, can be constructed and assembled withease and expedition.

' From theforegoing, it is thought that the construction, operation andmany advan-. tages of the herein described invention will be apparent tothose skilled in the art, without further destariptiomanditiwillbe-understood that'v arious cha-ngesin the size, shape; proportion andminor details of construction, may be resorted to without departingi'rom the-spirit or sacrificing any of the advantages of Q theinvention.

Having thus 'fully "described our invention, what we olainias new, =-anddesire to secure by Letters 1 Patent, is

-1. In a drill sharpening apparatus, the combination with a hollowbasehaving a bottom and -atop that constitutes a platform and providingachamber therebeneath ha v iiig a m-open side, of a fixed die on theplatformf'a movable -die cooperating with the fixed die, a carrier forthe movable, die extending downwardly into the chamber, a cylindermember mounted upon-the-bottoin and' looated ii-n the-chamber, saidcylinder member being accessible and --removable through the open side,a--'piston- -in the-chamher, *and means in the chamber connecting "thepiston and carrier to operate" the latter bythe-tormer. I

I 2., In a 'drillsharpening i apparatus, A the combination with a hollowbase l having a bottom a top that constitutes a platrornr and providinga chamber *therebenewth *having anopen 'side, of a fix'ed die on theplat-form, -a"-movable 'die 'fcoo-perating with the, fixed-die; acarrier for the movable die extending downwardly in'to the chamber, acylinder member mounted-on {the ehamber,

a pistoir in the: cylinder member, a! lever in the" chamber fulcrumedbetween its ends on the base, "aconnection between the: *piston and onearm of the ljev'erpand aiconnection between "the otherarm-* ofthedeverand the barrier.

3; In adrill 1 sharpeningapparatus, the combination with a hol low baseproviding a chamber and having a top-yw'allconstituting a platformyof" afixedflie on the 'plat- 7 form, upright reciprocating carrier rods inthe chamber; 'proj'eting labove the platform on oppositesides'of thefixed die, a die mounted on the projecting portions of'the rods andcooperating withtheiixd die, a lever fulcrumed between its ends in thechamber, a cross head connecting the rods with the chamber and connectedto one end of the lever, and an upright motor in the chamber having apiston connected to the other end of the lever.

4. In a drill sharpening apparatus, the

combination with a hollow base member comprising a top, abottom,opposite open sides and an intermediate upright partition betweenthe bottom and top, a. fixed die on the top, a movable die ooact-ingwith the fixed die, a movable carrier for the die extending into thebase on one side of the partition, a motor mounted in the base on theother side of the partition, a lever in the base fulcrumed between itsends therebottom "within the casing and, accessible thr-oughrone :o f;the :open sides, and actuating means for the movabledieavithin theeasing "ande-ioperatedby-the motor, ;;s,aid actuating I means beingaccessible through the other iopen side.

' 6. lIn-a *drill a sharpening apparatus, the

combination with =a hollow :base member constituting a leasing andhaving: opposite open -si'des 1 and an intermediatereendioroingpartition, the top of said base. member eonstitutin'g'a platform, ofuafixed the 'LOIl :the platform, a upright reciprocatory plunger rodsextending through the platiorm on opposite sides of: the fixed dieand.having portions within the casing-,on'S one-, side of; \the partition; amovable vdie carried: by the :PIO- j'ecting portionsu of the i and;coacting with the fixed d-ie, a =cnossiheadr connecting the rods 5 withthe casing Mandi. accessible through one 0f: the :open' sides, anleverfulcrumed bet-ween IitS -endsdn the casings transversely of the partitiongai pitman 1 connecting oneend of the lever and the :cross head, an1 mpright cylinder in the-"casing 5 on .the opposite side o f thepartitionmto the cross hejad and plungen rods, a piston. in the:cylinder, 1 at "pitman connectingthe i piston: and the opposite endoiithe lever to the first pit- -m an, arid detachable i olosures forwtheopen 'sides-o-f thecasing. I a V 7; In a drill sharpening apparatus,;;:the combination withcoa'cting dies, vof a :motor tor:relatively:nrovingfltheisame; means for admitting motivefluidi toithez-motorpermitting its exhaust, and:= a eonduit having a vreceiving mouth inlines with: the 1 exhaust and an ioutlet delivering to the tens, @saidumouth permitting the escape Mo-i excessexhaust.

8. In a drill sharpening apparatus, the

combination with coacting dies, of a motor for relatively moving thesame, means for admitting motive fluid'to the motor and permitting itsexhaust, and a conduit having a iunnelform receiving mouth in line withbut spaced from the exhaust permitting means, a

said conduit delivering to the dies.

9. In a drill sharpening apparatus, the I combination with a hollow basemember having a closed chamber, of relatively movv ceiving a portion ofthe exhaust directly from the exhaust permitting means and directing asa cleaning agent to the dies, allowing the initial escape of theremainder of the exhaust into the chamber and utilizing the said exhaustthat escapes into the chamber for die cleaning purposes.

10. In a drillsharpening apparatus, the combination with a hollow basemember having a closed chamber, of relativelymov able dies mounted onthe base member, a motor for relatively moving the dies, means forsupplying motive fluid to the motor and permitting its exhaust, andmeans for receiving a portion of the exhaust directly from the exhaustpermitting means and directing as a cleaning agent to the dies, allowingthe initial escape of the remainder of the exhaust into the chamber andadmitting said escaped exhaust into the directing means for die cleaningpurposes.

11. In a drill sharpening. apparatus, the combination with a hollow basemember having a closed'chamber, of relatively movable dies mounted onthe base member, a motor for relatively moving the dies, valvecontrolled; means in the chamber for supplying motive fiuid to the motorand permitting. its exhaust, said means having an exhaust port in thechamber, and a conduit having an exhaust receiving tunnel in line withthe exhaust port, said conduit having outlet ports deliveringto thedies,

12. In a drill sharpening apparatus, the combination with a hollow basemember having a closed chamber, of relatively movablediesmounted on thebase member, a

.motor in the chamber forrelativ'ely moving the dies, valve controlledmeans in the cham ber for supplying motive fluidto 'themotor andpermitting its exhaust, saidmeans having an exhaust port in theichamber, and a conduit having an exhaust receiving tunnel in line withbut spaced from the exhaust port, said conduit having outlet portsdelivering to the dies. c r

13. In a drill sharpening apparatus, the combination with relativelymovable Workclamping dies, of a motor for moving the same, a fluidactuated dollying hammer for thework clamped by the dies, a valve chestcommon to the, motor and hammer, and having a motive fluid supplyreceiving port, an outlet supply port in communication with the dollyinghammer and a second outlet supply port in communication with the motorand located between the first two ports, and a reciprocatory plungervalve in the chest and movable in one direction to a position that cutsoff communication between the supply receiving port and the other twoports and intheopposite direction to suecessively uncover to thereceiving port, the outlet supply port to the motor and the outletsupply port to the dollying hammer and on a reverse movement to closethem in reverse order.

l-l; In a drill sharpening apparatus, the combination with relativelymovable workrlamping dies, ofa motor for moving the same, includingacylinder member and a piston operating therein and having opposedpressure surfaces, a fluid actuated dollying hammer for the workclampedby the dies, a valve chest common to the motor andham- .rger andmounted on the cylinder member, said chest having a live fluid pressurechamber with a supply port leading thereto and a pressure port leadingtherefrom to the interior of the cylinder member on one side or thepiston therein, said valve chest having anotherpressure port leadingtherefrom to the opposite sideof said piston, a conduit leading from thevalve chest on the outer side of the second pressure port, and areciprocatoryi plunger valve in the chest that is movable tosuccessivelyopen the second pressure port and conduit to the pressure chamber in theorderrnamed and to close them in the reverse order. a v In testimonywhereof, We afiix oursignatures in the p'reseuce of two witnesses.

